Each fuel tank is equipped with our state-of-the-art electrical sending unit that is compatible with 35-240 ohm industry standard dash mounted gauges. Vent boss is barbed to provide a secure hose fit. A female, 1/4" NPT 90° withdrawal rotates 360° to aid during installation of fuel hose. It is recommended that 3% to 5% expansion areas be allotted in all directions when installing tank. 26"L x 16"W x 11.75"H. 19 Gallon built-in fuel tank. Tank constructed from cross link polyethylene requires no baffles Fill neck uses 1-1/2" I.D. fill hose, vent uses 5/8" I.D. vent hose Ideal for gasoline or diesel .